Request keyboard focus when no child is found (#713)

lib/src/widgets/editor.dart

@@ -591,6 +591,7 @@ class _QuillEditorSelectionGestureDetectorBuilder
 
     editor!.hideToolbar();
 
+    try {
       if (delegate.selectionEnabled && !_isPositionSelected(details)) {
         final _platform = Theme.of(_state.context).platform;
         if (isAppleOS(_platform)) {
@@ -628,8 +629,10 @@ class _QuillEditorSelectionGestureDetectorBuilder
             ..onSelectionCompleted();
         }
       }
+    } finally {
       _state._requestKeyboard();
     }
+  }
 
   @override
   void onSingleLongTapStart(LongPressStartDetails details) {